Based on an investigation in the Laoshan Bay artificial reef zone from 2014-2016, a trophic model of the Laoshan Bay artificial reef ecosystem was constructed using Ecopath with Ecosim software to analyze the energy flow pattern and attributes of the ecosystem, estimating the carrying capacity of Chlamys farreri. The model included 17 functional groups, covering nearly all the main processes of the energy flow in Laoshan Bay artificial reef ecosystem. Network analysis showed that the trophic level of the functional groups varied from 1.0-4.255, and Conger myriaster occupied the highest trophic level. Five discrete trophic levels were found, and the mean trophic transfer efficiency was 10.8%, with a mean transfer efficiency of 10.9% from detritus and 9.8% from the primary producers within the ecosystem. The total system throughput was estimated to be 14256.510 t km^-2 y^-1, with 68% originated from detritus. The ratio of total primary productivity to total respiration of the system, the connectivity index, and the omnivory index were 1.127, 0.293, and 0.333, respectively, showing an ecosystem with a high maturity, a complex food web, and a high internal stability. The key species index analysis showed that Sebastes schlegelii had a high keystone index and relative overall effect, indicating that it may play an important ecological role in the current ecosystem. The ecological capacity of the ecosystem for Chlamys farreri culture is 189.679 t/km²; the current stock may increase by 18.55% of the current level.